Manifold for internal-combustion engines.



H. 1. GAISMAN & E. w. GRAEF.

MANIFOLD FOR lNTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAR. 13, 1916.

1,205,6 1 4. Patented Nov. 21, 1916.

2 SHEETSSHEET I,

H. I. GAISMAN & E. W. GRAEF.

MANIFOLD FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAR. 13. I9I6.

Patented Nov. 21, 1916.

2 SHEETS-SHEET 2.

W I Snuc-ILLOLS ZZJQaL'Wwa 78 40M? UNITED STATES PATENT orruon.

HENRY J. GAISMAN, 0F WOODMERE, NEW YORK, AND ERNEST W. GRAEF, 0F CALDWELL, NEW JERSEY; SA ID GRAEF ASSIGNOR T0 SAID GAISMAN.

MANIFOLD FOR INTERNAL-COMBUSTION ENGINES.

Application filed March 13, 1916.

object to heat the mixture in its passage from the carbureter to the engine, and to regulate the distance traveled by the mixture in a heated chamber or passage of the manifold according to weather conditions.

Our invention comprises novel details ofimprovement and combinations of parts that will be more fully hereinafter set forth and then pointed out in the claims.

Reference is to be had to theaccompanying drawings forming part hereof, wherein,

Figure 1 is a plan view of our improve- .ments, shown in position upon an engine;

Fig. 2is a side view of the manifold shown in 1; Fig. 3 is a section substantially on the line 3(3, in Fig. 1; Fig. 4 is a section substantially on the line 4, 4, in Fig. 1; Fig. 4 is a detail of part of the manifold; Fig. 5.is an enlarged horizontal sectionthrough the manifold; and Fig. 6 1s a section on the line 6, 6, in Fig. 5.

Similar numerals of reference indicate corresponding parts in the several views.

The manifold illustrated in the accompanying drawings comprises a casing indicated generally at 1. having a chamber or passage 2 for the flow of heated exhaust gases or products of combustion from an internal combustlon engine 3, said casing also having a chamber or passage 4, in thermal relation to the heated gases in chamber 2, for the flow of fuel mixture to the engine cylinder or cylinders from a carburetor 5. Chamber 2 is provided with any desired number of ports or openings 6 communicating with the exhaust ports of the engine, for the flow of exhaustgases from the engine into chamber 2, whence such gases may flow through the outlet 7. By means of cored openings 8 the manifold may be detachably connected with the engine by means of studs or bolts 9 passing through said Specification of Letters Patent.

Patented Nov. 21, 1916.

Serial No. 83,752.

cored openings, the walls of said cored openings preventing communication between chambers 2 and 4. The outlets or ports 10 from mixture chamber 4 may communicate with the engine mixture inlet ports in any suitable manner, which outlets are shown in the form of tubular portions 10 of the casing passing transversely through exhaust chamber 2, whereby the mixture passing through said ports 10 will come in contact with the heated walls thereof. The specific relation, however, of chambers 2 and 4, so

far as our present improvements are concerned, may be varied in a manner well known in the art, provided the two chambers are maintained in thermal relation in the manifold.

The carburetor 5 chamber 4 and for such purpose said chamber is shown provided with an opening 11, the mixture outlet of the carbureter being shown connected with the manifold by means of a fitting or elbow 12. In the example illustrated one of the studs or bolts 9 passes through the fitting 12 and a nut upon said stud secures said fitting to the manifold. ithin chamber 4 is a wall or deflector 13 for the mixture, which is shown extending at one side of and above one of the mixture outlet tubes 10, providing a passage (1 above wall 13, and a space 7) below said wall, whereby the mixture is caused to be diversi fied in chamber 4, and may flow directly to the righthand outlet 10 (Fig. 3) or reversely under wall 13 to the left-hand outlet 10, as indicated by the arrows in said figure.

The portion of chamber 4 with which the carbureter is in direct communication is shown somewhateniarged in the nature of a compartment at 1.4, and one of the objects of our invention is to permit the directing of the mixture from the carbureter into such compartment 14 at such position therein as will cause the mixture to flow in contact. with the heated walls of the compartment for a more or less extended distance. For

communicates with such purpose we have illustrated a mixture tubular member 15 is shown opposing the flange 12" of the fitting l2, and said member is shown provided with a flange 15 hearing against an opposing face of the manifold and fitting 12. The arrangement is such that tubular member 15 may be rotated to any desired position and may be retained in i such position by the clamping effect of fitting 12 against flange 15 forcing the latter against the manifold.

By means of the above described devices, the tubular member 15 may be adjusted rotatively in such manner that its outlet 16 may be presented within compartment 14 in any desired position with respect to the passage a, and may be retained in such position, whereby the mixure flowing from outlet 16 may be caused to pass through compartment 14 for a distance more or less great. As an illustration of the utility of our improvements, it may be said that if it be desired that the mixture be subjected to the longest possible flow in the heated manifold,

as, for instance, in cold weather, then the member 15 may be rotated so that its outlet 16 would be in a position approximately adjacent to the point a (Fig. 3) whereby the mixture would be delivered into the compartment 14 at a point remote from the passage a, whereby the mixture would flow l through the compartment 14 for the greatest distance. If, on the other hand, it be desired that the mixture do not be subjected to such an extended flow in the heated manifold, as, for instance, in warm weather, then the member 15 may be so rotated that its outlet 16 will-be brought to a position approxi-.

mately at the point d in Fig. 3, close to passage a. Hence the mixture flowing from member 15 would not be subjected to such an extent to the heated manifold as ,when flowing from the point 0, but would flow direc tly tothe passage (1. When desired, the

member 15 may be so rotated and set that its outlet 16 will'be presented at any other point in compartment 14 between the .ex-

tremes c and d, to regulate the flow of the mixture through compartment 14 to the desired extent according to weather conditions that-may vary between cold and warm weather. The member 15 may be provided withapointer or index 17, set with relation to outlet lfiyand the manifold may be provided jwitli indicating points 18 to whichthe pointer: 17. may beset .(Fig. 2) according to ,theydesiredposition to which outlet 16.is intended to be'adjusted.

Changes may be madein the details of construction-and arrangement of parts set' forth, as the same may be varied, within the b jscopeiof. the appendedclaims, without vde-. aparting' fromthe spirit of the invention.

, Having ow: described our invention what we claimis 1. A manifold comprising a passage for" exhaust gases and a passage for fuel mix ture in. thermal relation thereto, and means to admit fuel mixture into the mixture passage at different points thereof for a longer or shorter course through said passage.

2. A manifold comprising a passage for exhaust gases and a passage for fuel 'mixture in thermal relation'thereto, said mixture passage having a mixture receiving compartment, and means to admit fuel mixture at different points of said compartment to permit the flow therethrough of mixture for a greater or less extent. Y

3. A.manifold comprising a passage for exhaust gases and a passage for fuel mix= ture in thermal relation thereto, said mixture passage having a compartment communicating at one end therewith and curved with respect to said passage, the opposite end of said compartment beingclosed, and means to admit fuel mixture to said compartment at different distances along the same to cause said mixture to traverse said compartment to a greater or less extent.

4. A manifold comprising a passage 'for exhaust gases and a passage for fuel mix- 1 ture in thermal relation thereto, and an ad justable element for communication with a carbureter and provided with'an outlet communicating with said passage whereby "vide a shorter or longer course Withinthe passage for such mixture. v

6. A manifold compr slng. a passage for exhaust gases and a passage for fuel m1x-' ture in thermal relation thereto, and a tu- 0 passage and adapted for communication bular member movably supported in said with a carbureter, said member having a admitted into said passage-- at different points to provide a shorter or longer course.

mixture outlet communicating" with said V passage whereby the fuel mixturemay be within the passage for suchmixture, "and means to connect the carburetenputlet with said tubularmember and retainl the latter inset position. v I v 7. A manifoldlcomprising a passage for exhaust gases'and'a passage for fuelmix ture in thermal relation thereto, S311d .m1X-* ture, passage having a plurality. of -.outlets,j

.a well within said mixture passage extendihg-toafpoint between two outlets providing mixture passages on opposite sides of a mix'- ture outlet, and an adjustable tubular memher having amixture outlet and located'in said mixture passage at one side of said outlet to direct mixture to one of said passages for a longer or shorter course in said passage.

8. A manifold comprising a passage for fuel mixture, means to heat said passage, and means to admit fuel-mixture into the mixture passage at different points thereof for a longer or shorter course through said mixture passage.

9. A manifold comprising'a mixture passage, means to heat said passage, an inlet forfuel mixture adjacent to one. end of said passage, and means to vary thepoint of delivery of mixture-from said outlet intosaid mixture passageto subject the mixture to a longer or shorter course through said passage.

10. A passage for exhaust gases and a' passage for fuel mixture in thermal relation thereto, and means to admit-fuel mixture into'the mixture passage for a longer or shorter course through said passage.

11. A passage for exhaust gases and a passage for fuel mixture in thermal relation thereto, and means to subject fuel mixture in the mixture passage to a greater or lesser contact with a heated surface therein.

12. A passage for fuel mixture, means to heat said passage, and means to subject fuel mixture in the mlxture passage to a greater or lesser contact with a heated surface.

course through said passage.

14. A passage for exhaust gases having a curved portion, means to heat said passage, and meansto admit fuel mixture into the curvedportion of the passage for a longer or shorter course through the passage.

Signed at New York city, in the county of New York, and State of New York, this 11th day of March, 1916.

HENRY J. GAISMAN. ERNEST W. GRAEF. 

